Presentation API: implement renderer side of PresentationConnection.close().

third_party/WebKit/public/platform/modules/presentation/WebPresentationClient.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef WebPresentationClient_h
 #define WebPresentationClient_h
 
 #include "public/platform/WebCallbacks.h"
 #include "public/platform/WebCommon.h"
 #include "public/platform/WebPassOwnPtr.h"
@@ skipping 34 matching lines @@
     virtual void sendString(const WebString& presentationUrl, const WebString& presentationId, const WebString& message) = 0;
 
     // Called when the frame requests to send ArrayBuffer/View data to an existing session.
     // Embedder copies the |data| and the ownership is not transferred.
     virtual void sendArrayBuffer(const WebString& presentationUrl, const WebString& presentationId, const uint8_t* data, size_t length) = 0;
 
     // Called when the frame requests to send Blob data to an existing session.
     // Embedder copies the |data| and the ownership is not transferred.
     virtual void sendBlobData(const WebString& presentationUrl, const WebString& presentationId, const uint8_t* data, size_t length) = 0;
 
+    // Called when the frame requests to close an existing session.
+    virtual void closeSession(const WebString& presentationUrl, const WebString& presentationId) = 0;
+
     // Called when the frame requests to terminate an existing session.
     virtual void terminateSession(const WebString& presentationUrl, const WebString& presentationId) = 0;
 
     // Called when the frame wants to know the availability of a presentation
     // display for |availabilityUrl|.  The ownership of the callbacks argument
     // is transferred to the embedder.
     virtual void getAvailability(const WebString& availabilityUrl, WebPresentationAvailabilityCallbacks*) = 0;
 
     // Start listening to changes in presentation displays availability. The
     // observer will be notified in case of a change. The observer is
     // respensible to call stopListening() before being destroyed.
     virtual void startListening(WebPresentationAvailabilityObserver*) = 0;
 
     // Stop listening to changes in presentation displays availability. The
     // observer will no longer be notified in case of a change.
     virtual void stopListening(WebPresentationAvailabilityObserver*) = 0;
 
     // Called when a defaultRequest has been set. It sends the url associated
     // with it for the embedder.
     virtual void setDefaultPresentationUrl(const WebString&) = 0;
 };
 
 } // namespace blink
 
 #endif // WebPresentationClient_h